From what I understand to get all the health benifits they are touting now adays you have to drinnk the caffinated and massive amounts. Taking an extract as well can help with that.

I have both regular and decaffinated, though I don't drink it much anymore. I found to much caffine at night would keep me awake, but a nice cup of hot tea is so relaxing at night.

Right now though I'm in love with Good Earth Slimming tea. There is no carbs. caffine, or senna (the thing in most diet teas that cause upset stomach) and the taste is great. I add a little DaVinccis and a few granuals of pure stevia extract for a sweet treat before bed